N.Y. Comp. Codes R. & Regs. tit. 6, § 646-4.10 – Vegetative cutting and clearing restrictions in stormwater regulatory programs.

(a) No vegetation shall be felled into any lake, pond, river, stream or intermittent stream and if inadvertently felled into one of these water bodies, shall be removed immediately from the waterbody. The removal of dead, or dying, diseased trees or trees presenting a health or safety hazard shall not be exempt from this requirement.
(b) Within 500 feet of the mean high water mark of any lake, pond, river, stream, or wetland, no land area, including areas stockpiled with earthen materials, which has been cleared may be made or left devoid of growing vegetation for more than 24 hours without a protective covering securely placed over the entire area and/or erosion control devices properly installed to prevent sediments from entering the water body. Acceptable protective coverings include natural mulch of a depth of two inches, rock rip-rap, non-degradable materials such as plastic or canvas coverings, and impervious structures.
(c) Any area of land from which the natural vegetative cover has been either partially or wholly cleared or removed by development activities shall be revegetated within 10 days from the substantial completion of such clearing and construction. Acceptable revegetation shall consist of the following:
1. (1) reseeding with an annual or perennial cover crop accompanied by placement of straw mulch or its equivalent of sufficient coverage, but not less than 50 percent of the total disturbed area, to control erosion until such time as the cover crop is established over 90 percent of the seeded area;
2. (2) replanting with native woody and herbaceous vegetation accompanied by placement of straw mulch or its equivalent of sufficient coverage to control erosion until the plantings are established and are capable of controlling erosion; and
3. (3) any other recognized method which has been reviewed and approved as satisfying the intent of this requirement.
(d) Any area of revegetation must exhibit survival of a minimum of 75 percent of the cover crop throughout the year immediately following revegetation. Revegetation must be repeated in successive years until the minimum 75 percent survival for one year is achieved.
(e) Ground clearing or grading activities which occur during the period October 15th to April 15th, during which germination of vegetation typically will not take place, shall be required to incorporate extra measures during revegetation in order to reduce erosion and maintain water quality. These extra measures include, but are not limited to, the use of screen mesh, netting, extra mulch, and siltation fences.
(f) Land disturbance must be compliant with regulations for stream corridors in Subpart 646-5 of this Part.